(function (doc, win) {
    var docEl = doc.documentElement,
        resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
        recalc = function () {
            var clientWidth = docEl.clientWidth;
            if (!clientWidth) return;
            docEl.style.fontSize = clientWidth/13.66 + 'px';

            // var offsetTop = $("div.content").offset().top;
            // var headerHeight = $("header").height();
            // $("ul.pic").css({ "line-height": offsetTop-headerHeight + "px"});
        };
    if (!doc.addEventListener) return;
    win.addEventListener(resizeEvt, recalc, false);
    doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);